<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			*{
				margin:0;
				padding:0;
			}
			html,body{
				font-size:20px;  /* 假设：iphone6 100px  iphone7 106px*/
			}
		    p{
			   font-size:2rem; /* 40px */   
			   height:0.5rem;
			}
			span{
			   font-size:2rem; /* 40px */
			}
		</style>
	</head>
	<body>
		<div>
			<p>
				<span>111</span>
			</p>
		</div>
	</body>
</html>
